
hyperextension (on bench)
RachisPoids du corps

Étape 1: Start by lying face down on the stability ball with your hips resting on the ball and your feet firmly planted on the ground.
Étape 2: Place your hands behind your head or cross them over your chest.
Étape 3: Engage your core and slowly lift your upper body off the ball, extending your back until your body forms a straight line from your head to your heels.
Étape 4: Pause for a moment at the top, then slowly rotate your torso to one side, keeping your hips and legs stable.
Étape 5: Return to the center and repeat the rotation to the other side.
Étape 6: Lower your upper body back down to the starting position and repeat for the desired number of repetitions.